This study addresses the structural and stratigraphic controls on hydrocarbon entrapment in the Silah field,
northwestern Egypt. This area is considered a rift-basin, where polyphase tectonics strongly influences reservoir
distribution and maturation. The aim was to delineate subsurface structural features and identify high-potential
hydrocarbon traps to guide future appraisal and development. The study integrated thirty 2D seismic lines, VSP
calibration, synthetic seismograms, and wireline logs from five drilled wells to pick key horizons, map faults,
generate isochore/isopach maps, and build a depth-converted 3D structural model. Results show a network of
NE–SW and NW–SE normal faults that produced graben/half-graben geometries and syn-rift thickness variations.
These structures were overprinted by Santonian inversion that formed a central faulted anticline. The principal
depocenter lies in the northwestern area. Isochore/isopach analyses indicate reservoir thickening adjacent to
growth faults. These faults juxtapose reservoir intervals against lithologies that may act as lateral seals, producing
structural configurations. The northwestern fault blocks and the crest of the central inversion anticline
emerge as the most promising structural candidates based on mapped reservoir thickness and closure geometry.
However, quantitative fault-juxtaposition, seal, and risk analyses are required to convert conceptual implications
into quantitative prospect rankings in future studies.